Examlex
Classify each of the following as a metal, nonmetal, or metalloid.
a. arsenic
______________
b. argon
______________
c. calcium
______________
d. plutonium
______________
Neurotransmitter
Chemical substances that transmit signals across a synapse from one neuron to another 'target' neuron or to a muscle or gland cell.
Acetylcholine
A neurotransmitter in both the peripheral and central nervous system that plays a crucial role in muscle activation and influences various functions in the body, including arousal, attention, memory, and motivation.
Dopamine
A neurotransmitter in the brain that plays major roles in reward, motivation, and the regulation of mood and movement.
Reuptake
A process by which neurotransmitters are taken back into the synaptic vesicles, thus terminating the signal between neurons.
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